Portable drill



FIG. 1 is a top plan view of a portable drill showing my new design;

FIG. 2 is a front elevational view;

FIG. 3 is a bottom plan view;

FIG. 4 is a rear elevational view;

FIG. 5 is a right side elevational view;

FIG. 6 is a left side elevational view thereof; and,

FIG. 7 is a top, front, left perspective view thereof. 

The ornamental design for a portable drill, as shown. 